1角苗期的虫害及其防治1.1小地老虎小地老虎又名土蚕,除危害各种蔬菜外还危害八角幼苗的根,地上部分苗随即枯萎。人们往往当苗枯萎后,拔起来才知被虫咬断。发生特点:一年可发生3~5代,以4-5月发生的第一代最多,危害也最严重。成虫是一种中型蛾子,体长16~23mm,翅展 1 corner seedling pest and its prevention and treatment of 1.1 Little Tigers Little Tigers also known as indigenous silkworms, in addition to endangering all kinds of vegetables but also endanger the root of the star anise seedlings, the ground part of the seedlings then withered. When the seedlings are often wilted, they are pulled apart to get bites. Occurred characteristics: 3 to 5 generations a year can occur, occurring in April-May most of the first generation, the most serious harm. Adult is a medium-sized moth, body length 16 ~ 23mm, wingspan